Easy to use :It can be used just after a simple cleaning,without waiting for a long time.You'll get a natural and confident smile right away. How to Use Step1: Drop into very hot water. With the fitting material attached onto the back of the teeth veneers, drop the teeth veneers into very hot water. The water needs to be above 130 Fahrenheit for the fitting material to soften and become pliable. Water from the tap will not be hot enough, you will need to heat it using a microwave or stove top. If the water is hot enough, the fitting material should be soft and pliable after 2 minutes. If after 2 minutes the material is not soft, you will need to use hotter water and try again. Step2: Fit the teeth into place Once the fitting material is soft and pliable, gently press the teeth onto the front of your existing teeth. Firmly hold the teeth in place and use your thumbs to press any excess fitting material up and around the back of your natural teeth. After 1 minute gently remove the teeth and set them cool immediately in cold water. Step3: Let the fitting material cool and then try them on Once the fitting material has cooled and hardened, you can place the teeth back into your mouth. When fitted correctly they should kind of pop into place. If you are not happy with the fit, you can reheat and refit as many times as you need until you get a secure fit. The teeth stay in place because the fitting material has made an imprint of your existing teeth Once you get accustomed to the fitting process, you may want to adjust the amount of fitting material used to get a fit that feels right for your mouth. Warm reminder: 1. Cosmetic teeth are only to help you improve the appearance of your teeth immediately, please be careful not to use this product while exercising, smoking, eating or drinking hot beverages. 2. Do not wear it for more than eight hours at a time. 3. Take it off when you sleep or feel unwell.